This is an example of how you support reduce transparency accessibility in your applications

ReduceTransparencyExample.swift

import SwiftUI

struct ReduceTransparencyExample: View {
    @Environment(\.accessibilityReduceTransparency) var reduceTransparency
    
    var body: some View {
        Text("Hello, World!")
            .padding()
            .background(reduceTransparency ? .black : .black.opacity(0.5))
            .foregroundColor(.white)
            .clipShape(Capsule())
    }
}